Automatic embroidering-machine.



K. EGGART.

AUTOMATIO EMBROIDERING MACHINE.

APPLICATION FILED MAR-l2, 1913.

Patented Aug. 5, 1913.

2 SHBETSSHEET 1.

illmll Wifiewex 75 W I Z PH (IO-,WASHINDTON D c K. EGGART.

AUTOMATIC EMBROIDBRING MACHINE.

APPLICATION FILED MAE.12,1913.

1,969,64Q, Patented Aug. 5, 1913.

2 SHEETS-SHEET 2.

Z :i m lllllllllllLlllllllllllllIlL llllllllllllllllllllllllllllllzmefies: Ewe/220W UNITED STATES PATENT UFFTQE.

KARL EGGART, 0F .ARBON, SWITZERLAND, ASSIGNOR TO THE FIRM OF ADOLPHSAURER, OF AB IBON, SWITZERLAND.

AUTOMATIC EMBROI-DERING-MAOHINE.

Original application filed August 6, 1912, Serial No. 713,597.

Serial No. 753,779.

To all whom it may concern:

Be it known that I, KARL EGGART, a citizen of the Republic ofSwitzerland, and a resident of Arbon, Switzerland, have invented certainnew and useful Improvements in Automatic Embroidering-Machines; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same, reference being had to theaccompanying drawings, and to letters or figures of reference markedthereon, which form a part of this specification.

This application is a division of my application filed August 6th, 1912,Serial No. 713,597.

In automatic embroidering machines as hitherto constructed the needleswhich are not in front of a hole in the jacquard card are displaced bythe relative movement between the jacquard card and a member carryingthe needles or the needle bars, whereby pressure is transmitted from thejacquard card by means of the needle bars to the blades which cause theadjustment of the automatic mechanism.

The terms blades and pushing blades comprise all such members which in awell known manner, according to the perforations of the pattern card,produce motions of different amplitudes in the automatic mechanism,which motions are transmitted to the embroidering frame, as described inUnited States Patent No. 1,059,880, dated April 22, 1913. The pressureor counter-pressure of the card actuates in this manner the needle barsas well as the blades. On the contrary, according to this invention thepressure or counter-pressure of the card actuates the needles only, andis not transmitted to the blades, which are displaced as usual accordingto the displacement of the needles, but by separate means. By operatingthe card in such a manner, among other advantages, a construction can beobtained in which the displacement of the needles takes place at anothertime than the displacement of the blades.

As with otherautomatic embroidering machines also in the presentconstruction adjacent blades are separately displaced, while the unmovedblades are constrained to remain in their position of rest. In practice:

Specification of Letters Patent.

Patented Aug. 5,1913.

Divided and this application filed March 12,

the drawback occurs that by shakes, riction,

wearing and the like, wrong blades are unintentionally moved withothers. In order to overcome this drawback in known constructions ofautomatic embroidering machines special arresting means are providedwhich are separately impelled. In the construction according to thisinvention the means which make it possible to. displace the bladesindependently from the jacquard card, are simultaneously used to securethe blades against unintentional movement. In this manner the use ofspecial arresting means is avoided.

In the structure embodying my invention the needle bars are selectivelyoperated by the card, and the blades are subsequently indirectlyoperated from the bars by means of bell-crank levers having two or threearms, one or two of said arms acting in conjunction with surfaces orprojections on the needle bars, which surfaces or projections performthe functions of arms to move the bell-crank levers and cause them toshift the blades.

Referring to the drawings illustrating two forms of mechanism embodyingmy invention, and in which like parts are similarly designated, Figure lis a partial view of so much of a jacquard mechanism as will benecessary for an understanding of my invention, parts thereof beingshown in elevation and parts in vertical section. Fig. 2 is a similarview of a modification. Figs. 3 and 4 are views similar to Fig. 2,illustrating parts in diiferent positions. F ig. 5 is a side elevationof parts of a jacquard apparatus, and Fig. 6 is a plan view of Fig. 5.

Referring to the mechanism illustrated in Fig. 1, the perforatedjacquard card 1 travels around a drum 2, and is progressed by well knownmeans. The jacquard card drum 2, together with a pin 3, hereinafterdescribed, are mounted on a slide 5 that is horizontally movable onstationary slide ways 4. The slide 5 may be impelled by any suitablemechanism, for example, by the mechanism shown and described in UnitedStates Patent No. 1,057,581, dated April 1, 1913. The needle bars 6carry at their forward ends needles 6 directed perpendicular to aportion of the card 1. The needle bars 6 are provided with slots 3through which passes the 8 whose function is to return all the needlebars to the left or inoperative position when the slide is moved to theleft in its inoperative position. The jacquard blades 7 are mounted toslide longitudinally in a frame 8 and are provided on their lower edgeswith a wide notch 7 into which projects a narrow rib or flange 8 on theframe. This notch 7 and flange 8 limit the longitudinal movements of theblades and more especially insure their proper end positions. The endsof the blades 7 projecting beyond the frame 8 are provided with notches7. Just above these projecting ends of the jacquard blades is a shaft 21supported at each end in brackets 22 projecting from the frame 8. Looseon this shaft 21 are means for indirectly operating the blades 7 fromtheir respective needle bars 6, which means comprises a bell-crank lever9 between each blade 7 and its controlling needle-bar 6. This bell-cranklever has a downwardly directed arm 9 having a rounded end that fits inthe notch 7 a and an arm substantially at right angles thereto having anup-turned end 9 arranged to engage the rear end of the pertainingneedle-bar 6. The frame 8 is vertically reciprocated by means of adouble-armed lever 10, Figs. 5 and 6, that is rocked by a cam 18 mountedon a shaft 12 and that engages the frame 8 by means of a roller 11. Theshaft 12 is rotated by any suitable means, not shown. The needlebars 6can be displaced by the card 1 horizontally, but not vertically.

The operation is as follows: \Vhen the slide 5 is moved to the right itcarries the card 1, the drum 2 and pin 3, and if there is no perforationin front of the needle 6*, the needle bar is also displaced to the rightby the card, from the position shown in dotted lines Fig. 1, to theposition shown in full lines. The frame 8 is then moved upward and theup-turned end 9 of the bell-crank lever 9 abuts against the rear end ofthe needle-bar 6, and by a further upward movement this bell-crank leveris turned on the shaft 21 to move its blade 7 into working position, asshown in dotted lines. Thereafter the frame 8 is moved downward, theslide 5 together with the card 1 and drum 2 returns to the left and thepin 3 returns all the selected needle bars and needles to their normalor zero position ready for the next selecting operation. If, however,there is a perforation in the card 1 in front of the needle 6 when thecard moves to the right, the needle passes through the perforation andthe needle-bar is not displaced. Then when the frame 8 moves upward theup-turned end 9 of the bellcranklever 9 does not touch the rear end ofthe needle-bar 6, but moves up past the rear end of the needle-bar, sothat the blade 7 remains in its normal position.

In the construction according to this in vention the displacement of thelight needlebar 6 may begin at the moment in which the frame 8 and theblades 7 begin their downward movement of the preceding working phase,while in the constructions heretofore known the needle-bars could not bedisplaced before the blades 7 were moved back into their normalpositions. By separating the adjustment of the needles from theadjustment of the blades, it is possible to adjust firstly the needlesduring the working period of the blades, so that the time hithertorequired for adjusting the needles may be used for producing othermovements. This is of great advantage for a smooth motion of theautomatic mechanism. An other advantage of the separation of the adjustment of the needles from the adjustments of the blades is the savingof the card, which in the hitherto known constructions became damagedand useless in a short time by the repeated blows on the ends of heavilyconnected needles and blades.

In the modification shown in Figs. 24l the bell-crank lever 9 isprovided with an additional arm 9 having an upturned end,

and is preferably symmetrical with the arm 9". The needle blades 6 ontheir upper edges are provided with two notches 23 and 2 1 so arrangedthat when the slides are in either operative or inoperative position, alocking slide 12 may enter the notches that are positioned beneath itand lock both the selected and unselected needle-bars in position. Eachneedle-bar is provided at its rear on its lower edge with a notch 15,and at its forward end with a depending projection or lug 16. Thejacquard blades 7 are arranged to engage a forward stop 13 that preventsthe blades from moving too far forward, while a member 1 1 ishorizontally reciprocated against the action of a spring 21 by means ofa cam 20, Figs. 5 and 6, on the shaft 12* for returning the selectedblades to normal position. The frame 8 is vertically reciprocated in thesame man ner as described with reference to Fig. 1. When the card ismoved against the needles 6- those needles that are not opposite aperforation in the card are moved with their needle-bars 6 to the right,Fig. 2, after which the locking slide 12 looks all the blades. The frame8 is then moved upward, Fig. 3, the lug 16 of the selected needle-bar 6being then in the path of the upturned end of the arm 9 of the doublebell-crank lever 9. In order to permit the required rotation or rockingof the bellcrank lever on the shaft 21, the symmetrically arranged arm 9of the bell-crank lever 9 will enter the notch 15, and blade 7 will bemoved to the position shown in Fig. 3. If the needle-bar 6 has not beenmoved by the card 1, and the needle 6 passes through a hole in the card,the needle-bar 6 will be locked in its normal position by the slide 12entering notch 24. The lug 16 is out of the path of the arm 9, and notch15 is out of the path of the end of arm 9 and the end of this arm willabut against the under edge of the rear end of the needle-bar, as shownin Fig. 5, and the blade 7 will be positively held against movement.This positive holding of unselected blades is of great advantage andprevents an unselected blade from being dragged out of its normalposition by the friction of an adjacent selected blade.

I claim- 1. In an automatic mechanism for embroidering machines, ajacquard card, needle-bars directly to be moved by laterally moving thejacquard card, blades for transmitting the displacement of theneedle-bars to the impelling means of the automatic mechanism, avertically movable frame carrying the blades, bell-crank leverspivotally mounted on the frame, ends of the levers engaging in theblades, while the other ends of the levers at the upward movement oflghe frame move against displaced needlears.

2. In an automatic mechanism for embroidering machines, a jacquard card,needle-bars directly to be moved by laterally moving the jacquard card,blades for transmitting the displacement of the needle-bars to theimpelling means of the automatic mechanism, a vertically movable framecarrying the blades, three-armed levers pivot-ally mounted on the frame,arms of the levers engaging in the blades, second arms moving againstdisplaced needle-bars at the upward movement of the frame, and thirdarms of the levers moving against the needle-bars and arresting theblades in their extreme positions.

3. In a jacquard mechanism for embroidering machines, the combinationwith selectively controlled needle-bars, of blades, end stops for theblades, a reciprocated frame for carrying the blades, and means betweenthe bars and blades and moved into contact with the bars by the movementof the frame to control the blades in accordance with the selection ofthe needle-bars.

4. In a jacquard mechanism for embroidering machines, the combinationwith selectively controlled needle-bars; of jacquard blades, areciprocating frame in which the blades are mounted, and means betweenthe needle-bars and blades mounted on the frame and moved thereby towardthe needle-bars to control the blades in accordance with the selectionof the needle-bars.

5. In a jacquard mechanism for embroidering machines, the combinationwith selectively movable needle-bars; of jacquard blades, a reciprocableframe in which the blades are mounted, and pivoted means between theneedle-bars and blades in direct engagement with the blades and movedinto engagement with selected needle-bars by the frame to control theselection of the blades in accordance with the selection of theneedle-bars.

6. In a jacquard mechanism for embroidering machines, the combinationwith selectively movable needle-bars; of jacquard blades, a reciprocableframe in which the blades are mounted, bell-crank levers, arms of whichare in direct engagement with the blades and arms of which projectacross the path of selected needle-bars and are moved into contacttherewith when the frame is moved.

7. In a jacquard mechanism for embroidering machines, the combinationwith selectively controlled needle-bars; of blades independent of theneedle-bars, a vertically reciprocable frame in which the blades aremounted, bell-crank levers having arms directly engaging the blades, andarms projecting across the path of selected bars and arranged to contactwith said selected bars when the frame is moved upward.

8. In a jacquard mechanism for embroidering machines, the combinationwith selectively operated needle bars each having a projection and anotch; of blades, a vertically movable frame in which the blades aremounted, bell-crank levers carried by the frame each having a downwardlydirected arm in engagement with a blade and two additional arms one ofwhich engages said projection and the other of which enters said notchin a selected blade upon the upward movement of the frame.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

KARL EGGART.

IVitnesses GAMI RIOOARDO, RANDALL ATKINSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

